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Find answers to the most common questions on ordering, payment, shipping and warranties.


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Your user guides

Your Dexcom ONE user guides are also available to download in pdf format.

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Smartphone compatibility

Check the compatibility of your smartphone with the Dexcom ONE app.

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Technical Product Support

Get in touch with our Technical Support team using our online form.


Need additional help with Dexcom ONE product?
Product support

For product troubleshooting or replacement enquiries, please complete a Product Support Request.

Office opening times: Monday - Friday 09:00 - 18:00

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Orders and shipment support

Our online tools provide the quickest method of solving any potential issues. You can contact our customer service and order enquiries team below:

Office opening times: Monday - Friday 09:00 - 18:00


Our online tools provide the quickest method of solving any potential issues. You can phone our product support team below:

Office opening times: Monday - Friday 09:00 - 18:00

Call Us +3728000032118

Call Us +3728804506